Window raising apparatus with controlling means



Aug. 28, 1962 H. MANDEL 3,051,472

WINDOW RAISING APPARATUS WITH CONTROLLING MEANS Filed July 3, 1959 H.wif a I N V EN TOR. HEM?! M/l/VDEL United States Patent Ofilice3,051,472 Patented Aug. 28, 1962 3,051,472 WINDOW RAISING APPARATUS WITHCONTROLLING MEANS Henri Mandel, Clitfside Park, NJ. (1 W. Trmont Ave,Bronx 53, N.Y.) Filed July 3, 1959, Ser. No. 824,808 2 Claims. (Cl.268-122) My invention is an improved window raising apparatus havingnovel controlling means such that the window can be quickly moved tofull or partly open position, and hold in position thereat; and itincludes a knob or pushbutton which enables the opening of the window totake place.

It is an important object of my invention to provide window apparatuscomprising members, such as sash or [balanced slats, actuated by springmeans under tension, said means being disposed in the frame or casing ofthe window. In one construction, a gear train is so mounted that it willbe operated as the window is opened, but is associated with stopmechanism which can easily be manipulated to release the gear train, sothat the means under tension may pull as required; such stop mechanism,when released, causing the gear train to come to a standstill; so thatno further opening of the window members will take place. In thedrawings several embodiments of this invention are illustrated, and thenovel features are pointed out in the claims. However, this disclosureis for purposes of explanation only and variations in structural detailsmay be adopted without deviating from the characteristics whichdistinguish the invention.

On said drawings FIGURE 1 is a front view of a window frame and sashwith raising and arresting means according to my invention.

FIGURE 2 is a horizontal section of the line 22 of FIGURE 1.

FIGURE 3 is a section on line 33 on FIGURE 1.

FIGURE 4 is a side view of a controlling gear train used with myinvention,

FIGURE 5 is a view of .the opposite side of said gear train.

FIGURES 6 and 7 show details of part of the train.

In FIGURES 1 to 6 inclusive, the numeral 1 indicates a window casingcontaining a lower sash 2 and an upper sash 3. These sashes slide up anddown in grooves or channels 4 and 5 respectively in the window casing,which may be of any suitable construction, of metal or wood with moldingstrips along the inner edges of the casing having the grooves betweenthem. The lower window is raised by the action of springs 6 in thecasing 1; these springs being in the channels 4 and attached to studs 7on both sides of the lower window sash 2, and at their upper ends tostuds 8 fixed at a suitable height in the bottom of the grooves 4. Thesprings 7 are under tension when the lower sash 2 is closed, and act toraise the lower sash whenever they are free to take effect.

Mounted on the lower sash 2 at one side, such as the right, and fixed tothe sash 2 is a metal strip 9 which extends from a relatively low pointon the sash 2 up as far as may be needed for proper operation. The stripor bar 9 is flat and twisted so that its opposite long edges presenttrue spiral turns from top to bottom. It is secured at its lower end tothe lower part of the sash 2 by a suitably formed connector piece 10.Adjacent the sash near the topwhen the sash is closed, is a bracket 11,afiixed inside the casing 1, the lower end 12 of this bracket being bentlaterally into line with the strip 9, and rotatably mounted on the end12 is a bevel gear 13, within which is a part having a narrow centralopening 14 of the same shape as a cross section of the strip whichpasses through this opening; and, as it is fixed to the sash 2 at itslower end and is thus held against rotation, this strip will slidethrough the gear 13 when the sash goes up, and the spiral edges of thestrip will turn the element on gear 13. The strip 9 and connector 10constitute an arm for connecting the window to the gear train with thestop for releasing the window member to be opened by the spring.

On the bracket 11 above the end 12 is a bevel pinion 15 meshing with thegear 13, and above the gear 15 on the bracket are other gears the lastof which is mounted on a spindle 16 that carries a wheel 17 havingradial arms 18. All pinions and gears above the bevel gear 13 are ofcourse mounted to rotate freely on the bracket 11.

A sl-idaible stem 19 is mounted on the bracket 11 above the wheel 16,and projects to the outside on the front face of the casing 1, where itmay carry a knob 30. Inside the casing, the stem 19 bears a lateral arm21, normally in position to stop the rotation of the wheel 16. The stemis mounted in a U-shaped bearing 22, fixed to the bracket 11 at its topand in this bearing the stem 18 is encircled by a spring 23, which bearsat one end against a pin 24 on the stem 18 in the bearing piece 22.Usually, this spring 23 will act upon the pin 24 to move the stem 19outward, so that the arm 21 is in position to engage one of the arms 18and obstruct the rotatable member 17. When the stem 19 is pushed inwardto compress the spring 23, the arm 21 is moved inward away from therotatable member 17 on the spindle 16, releasing the wheel 17 so thatthe Wheel 17 and all the gears below it can rotate freely.

In action, when the lower sash 2 is closed and is to be opened, onepresses against the knob 20 so as to release the wheel 16. The springs 6then lift the window sash 2 and the spiral strip 9 then turns the gear13 which has a hub or boss 25 that can rotate in the end 12 of thebracket 11. Movement is thus transmitted through all the other gears andpinions, and the sash 2 rises as long as pressure is maintained on theknob 20. The window can be stopped at any point by releasing the knob20, whereupon the spring 23 will move the stem 19 outward and the arm 21on this stem will stop the member 16, bringing the whole gear train to astandstill. Thus the extent to which the lower sash can be raised andopened is controlled. To lower the window, the sash 2 can be pulleddownward, without regard to the position of the stem 19.

For this purpose the gear 13 has ratchet teeth (FIG. 7) 26 in the bottomof a seat or depression 27 in its upper face and the gear and its hubhave a central bore receiving a sleeve or bushing 28 having a collar orhead 29 by which it is supported in the cavity 27 of the gear 13. At itslower end the sleeve 28 has a flange 30 below the bracket, with a spring31 encircling the sleeve 28 between the bracket 11 and collar or flange30. On the lower face of the head 29 are ratchet teeth 32. The spring 31pulls the sleeve 28 and gear 13 downward and holds the ratchet faces ofthe gear 13 and sleeve 28 in engagement. The ratchet teeth on the gear13 and head 29 of the sleeve 28 are so arranged that when the strip 9moves upward in the sleeve, it will turn the gear and sleeve together;but on the down movement of the sash 2 and strip 9, the ratchet teeth onthe head 29 of the sleeve will be rotated in the opposite direction andthe head 29 will slip in the gear 13 without turning it, the spring 31then yielding to permit the sleeve 28 and head 29 to rise in the gear13. Hence even if the stop arm 21 then holds the wheel 16 and gear trainand gear 13 motionless, the sleeve can still turn and allow the sash 2to be lowered and shut.

The gear train on the bracket 11 has a governor to prevent too rapidrotation of the gears when the sash 2 is lifted by the spring 6 (seeFIGURES 5 and 6). On the rear face of the bracket is a circular rim 57concentric with the shaft or spindle 16, having a back 58 fixed theretoand secured on the bracket 11. The rim is open on the other or innerside, and in it is a crossbar 59 fixed to the spindle 16, and havingradial slats 60 therein. On this bar clearing the rim 57 are slidea-blegovernor weights 61 with studs 62 movable in the slots extending throughthe bar 59 and into the rim 57. Whenever the gears rotate too -fast theweights 61 are urged outward by centrifugal force and the pins or studs62 engage the inside of the rim 57, and the motion of the gears ischecked.

It can thus be seen that the apparatus can be set in operation by meansof the pushbutton or knob 20. The window sash member or slats will thenbe actuated to open position and the movement of the sashes or slats canbe stopped at any time merely by releasing the pushbutton.

My invention can be used in operating sliding doors as well as windows,and other constructions capable of being actuated in a similar manner.

Having described my invention what I believe to be new is:

1. The combination of a window casing, a member movably mounted therein,spring means extending vertically of said casing and connected to saidmember [for moving said member to full or partly opened position, a barwith spirally curved edges extending vertically of said casing andoperatively connected to said member to be moved with said member, agear train having a rotary element surrounding and meshing with said barto be actuated thereby when said member and bar are moved to be openedby said spring, and a depressible stop mounted in the casing beside saidgear train, said stop and said train having adjacent parts to be engagedwith each other to stop the gear train, member and bar, and to bedisengaged when the stop is released to permit said rotary gear train tobe actuated, said element and said bar having a one way ratchetconnection to enable said member to be retracted without operation ofsaid gear train.

2. The combination of a window casing, a member movably mounted therein,spring means extending vertically of said casing and connected to saidmember for moving said member to full or partly opened position, a barwith spirally curved edges extending vertically of said casing andoperatively connected to said member to move said member, a gear trainhaving a rotary element surrounding and meshing with said bar to beactuated thereby when said member and bar are moved to be opened by saidspring, and a depressible stop mounted in the casing beside said geartrain, said stop and said train having adjacent parts to be engaged witheach other to stop the gear train, member and bar, and to be disengagedwhen the stop is released to permit said gear train to be actuated, saidgear train having a governor attached to regulate the speed thereof.

References Cited in the tile of this patent UNITED STATES PATENTS727,812 Lawrence May 12, 1903 955,476 Reynolds Apr. 19, 1910 1,354,048Lindstrom Sept. 28, 1920 1,677,643 Leren July 17, 1928 FOREIGN PATENTS128,491 Australia July 26, 1948

